Mistral: Mistral Large 4 vs OpenAI: GPT-6 Sol Pro
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-07.
| Mistral: Mistral Large 4 | OpenAI: GPT-6 Sol Pro | |
|---|---|---|
| Vendor | mistralai | openai |
| Quality Score | 100 | 100 |
| Input Price | $0.68/M | $2.00/M |
| Output Price | $2.09/M | $10.00/M |
| Context Window | 524,288 | 1,050,000 |
| Max Output | 262,144 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Mistral Large 4 costs $1.20 and GPT-6 Sol Pro costs $4.50, so Mistral Large 4 is about 3.7 times cheaper for the same work.
GPT-6 Sol Pro reads up to 1,050,000 tokens at once, roughly 1,575 pages of text, against about 786 pages for Mistral Large 4.
Across the 10 tasks where they differ, Mistral Large 4 scores higher on 10 (SQL Generation, Code Completion, Code Documentation and others).
Mistral Large 4 was released in October 2026 and GPT-6 Sol Pro in September 2026.
Pick Mistral Large 4 if you need lower cost or the stronger all-round task scores; pick GPT-6 Sol Pro if you need long documents.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | Mistral: Mistral Large 4 | OpenAI: GPT-6 Sol Pro |
|---|---|---|
| SQL Generation | 133 | 132 |
| Code Completion | 131 | 117 |
| Code Documentation | 131 | 129 |
| Regex Writing | 119 | 117 |
| CSV / Spreadsheet Cleanup | 133 | 132 |
| JSON Extraction | 131 | 121 |
| Bulk Data Labeling | 129 | 118 |
| Long-Document Summarization | 137 | 136 |
| Short-Form Summarization | 123 | 113 |
| Blog Post Writing | 121 | 120 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →